trying to use has not been prepared.
       (SQLSTATE 26000)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-informix-duplicate-key">
     <term>-239 (<symbol>ECPG_INFORMIX_DUPLICATE_KEY</symbol>)</term>
     <listitem>
      <para>
       Duplicate key error, violation of unique constraint (Informix
       compatibility mode).  (SQLSTATE 23505)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-unknown-descriptor">
     <term>-240 (<symbol>ECPG_UNKNOWN_DESCRIPTOR</symbol>)</term>
     <listitem>
      <para>
       The descriptor specified was not found.  The statement you are
       trying to use has not been prepared.  (SQLSTATE 33000)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-invalid-descriptor-index">
     <term>-241 (<symbol>ECPG_INVALID_DESCRIPTOR_INDEX</symbol>)</term>
     <listitem>
      <para>
       The descriptor index specified was out of range.  (SQLSTATE
       07009)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-unknown-descriptor-item">
     <term>-242 (<symbol>ECPG_UNKNOWN_DESCRIPTOR_ITEM</symbol>)</term>
     <listitem>
      <para>
       An invalid descriptor item was requested.  (This is an internal
       error.)  (SQLSTATE YE002)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-var-not-numeric">
     <term>-243 (<symbol>ECPG_VAR_NOT_NUMERIC</symbol>)</term>
     <listitem>
      <para>
       During the execution of a dynamic statement, the database
       returned a numeric value and the host variable was not numeric.
       (SQLSTATE 07006)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-var-not-char">
     <term>-244 (<symbol>ECPG_VAR_NOT_CHAR</symbol>)</term>
     <listitem>
      <para>
       During the execution of a dynamic statement, the database
       returned a non-numeric value and the host variable was numeric.
       (SQLSTATE 07006)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-informix-subselect-not-one">
     <term>-284 (<symbol>ECPG_INFORMIX_SUBSELECT_NOT_ONE</symbol>)</term>
     <listitem>
      <para>
       A result of the subquery is not single row (Informix
       compatibility mode).  (SQLSTATE 21000)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-pgsql">
     <term>-400 (<symbol>ECPG_PGSQL</symbol>)</term>
     <listitem>
      <para>
       Some error caused by the <productname>PostgreSQL</productname>
       server.  The message contains the error message from the
       <productname>PostgreSQL</productname> server.
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-trans">
     <term>-401 (<symbol>ECPG_TRANS</symbol>)</term>
     <listitem>
      <para>
       The <productname>PostgreSQL</productname> server signaled that
       we cannot start, commit, or rollback the transaction.
       (SQLSTATE 08007)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-connect">
     <term>-402 (<symbol>ECPG_CONNECT</symbol>)</term>
     <listitem>
      <para>
       The connection attempt to the database did not succeed.
       (SQLSTATE 08001)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-duplicate-key">
     <term>-403 (<symbol>ECPG_DUPLICATE_KEY</symbol>)</term>
     <listitem>
      <para>
       Duplicate key error, violation of unique constraint.  (SQLSTATE
       23505)
      </para>
     </listitem>
    </varlistentry>

    <varlistentry id="ecpg-sqlstate-sqlcode-ecpg-subselect-not-one">
     <term>-404 (<symbol>ECPG_SUBSELECT_NOT_ONE</symbol>)</term>
     <listitem>
      <para>
       A result for the